Synthesized answer
The provided passages do not explicitly detail the practical implications of the concepts discussed in "The Sources of Normativity." The passages explain that ethical concepts are normative and make claims on us, commanding, obliging, recommending, or guiding [1]. Christine Korsgaard identifies and traces the history of four accounts of the source of normativity: voluntarism, realism, reflective endorsement, and the appeal to autonomy [1].
The passages indicate that Kant's theory, where normativity springs from our own autonomy, is presented as a synthesis of these accounts [1, 2]. However, the practical implications of this, or any of the discussed accounts, are not elaborated upon within the provided text.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: The sources of normativity by Christine M. Korsgaard Description: Ethical concepts are, or purport to be, normative. But where does their authority over us come from? Korsgaard identifies 4 accounts of the source of normativity, traces their history and compares their early and contemporary versions. --- Google Books --- Title: The Sources of Normativity by Christine M. Korsgaard Description: Ethical concepts are, or purport to be, normative. They make claims on us: they command, oblige, recommend, or guide. Or at least when we invoke them, we make claims on one another; but where…
rom our own autonomy emerges as a synthesis of the other three, and Korsgaard concludes with her own version of the Kantian account. Her discussion is followed by commentary from G. A. Cohen, Raymond Geuss, Thomas Nagel, and Bernard Williams, and a reply by Korsgaard. Categories: Philosophy Pages: 294 Snippet: Her discussion is followed by commentary from G. A. Cohen, Raymond Geuss, Thomas Nagel, and Bernard Williams, and a reply by Korsgaard.